verb(-trated; -trating)Date: 1758transitive verb1. to cause (as a liquid) to permeate something by penetrating its pores or interstices
2. to pass into or through (a substance) by filtering or permeating
3. to pass (troops) singly or in small groups through gaps in the enemy line
4. to enter or become established in gradually or unobtrusively usually for subversive purposes <

the intelligence staff had been infiltrated by spies

>intransitive verb
to enter, permeate, or pass through a substance or area by filtering or by insinuating gradually
• infiltratenoun
• infiltrationnoun
• infiltrativeadjective
• infiltratornoun

infiltrate — [[t]ɪ̱nfɪltreɪt[/t]] infiltrates, infiltrating, infiltrated 1) VERB If people infiltrate a place or organization, or infiltrate into it, they enter it secretly in order to spy on it or influence it. [V n] Activists had infiltrated the student… … English dictionary

infiltrate — in|fil|trate [ˈınfıltreıt US ınˈfıltreıt, ˈınfıl ] v 1.) [&GT;I always + adv/prep, T] to secretly join an organization or enter a place in order to find out information about it or harm it ▪ Police attempts to infiltrate neo Nazi groups were… … Dictionary of contemporary English